Wrist watch strap



July 1l, 1950 J C. WHITE 2,514,818

WRIST WATCH STRAP Filed Feb 5. 1946 lib/ways 'atentecJuly 11, 195:10

UNITED STATES PATENT OFFICE 1 Claim.

My invention relates to wrist watch straps and the object of my invention is to provide a wrist watch strap which can be made entirely from stainless steel or the like.

Another object of my invention is to provide a wrist watch strap which cannot become unfasf tened accidentally.

Other objects of my invention may appear in the following specication describing my invention with reference to the accompanying drawing illustrating a preferred embodiment of my invention. It is however to be understood that my invention is not to be limited or restricted to the exact construction and combination of parts described in the specication and shown in the drawing, but that such changes and modifications can be made which fall within the scope of the claim appended thereto.

In the drawing:

Figure 1 is an edge View of a wrist watch strap according to my invention, a watch attached thereto being indicated in broken lines.

Figure 2 is a fragmentary plan view of the strap shown in Figure 1 detached from the watch.

Figure 3 is a sectional View taken on line 3-3 of Figure 2, and

Figure 4 is a sectional view taken on line 4 4 v of Figure 2.

Referring now in detail to the drawing the wrist watch strap according to my invention consists mainly of two strips of thin resilient material, preferably stainless steel, I and II respectively. On one end of each of'these strips an eye I2 is formed by means of whichv the strips can be attached in any conventional, well-known manner to a watch I3.

On the other end of the strip Ill another eye I4 is formed which holds pivotally a buckle I5. This buckle has a main cross piece I6 extending through the eye Ill of the strip Il). Two side bars Il extend forwardly from and at right angles to the main cross-piece I6 and are formed preferably integrally with said cross-piece. On their ends the side bars are bent inwardly at right angles as shown at I9, and then downwardly to form short locking prongs I9. Midway between the main cross-piece I6 and the inwardly extending ends of the side bars Il a center cross-piece 20 extends between the side bars and is rigidly fastened thereto. A loop-shaped keeper 2| is slidably mounted on the strip I0.

The free end of the other strip I I is preferably tapering as shown at 22 and adjacent this end strip II is provided with one or more locking protuberances 23. When a plurality of protuberances are employed, the protuberances protrude upwardly on strip I I, extend transversely thereof and are arranged symmetrically to the longitudinal center line of the strip I I.

At a distance from the protuberance 23 and between the eye I2 on strip I I and said protuberance a plurality of pairs of locking holes 24 are provided, adapted to selectively receive the locking prongs I9 of the buckle I5,

When a strap according to my invention is attached to a watch and is to be secured to a wrist the tapered end 22 of strip Il is inserted in the buckle I5 between the ends I8 .and the center cross-'piece 20 so that the ends I3 will be on top of and the cross-piece 20 below the strip II. Then the tapered end will extend over and above the main cross-piece I6 and will be inserted into the loop-shaped keeper 2I, which will be moved forwardly until it slides over the protuberance 23. The prongs I9 are inserted into the selected holes 24. The wrist of the wearer will exert an upward pressure on the center crosspiece 20, which pressure .will be transmitted to the strip Il located above said cross-piece. In this manner the prongs I9 will be kept securely in the holes 2t yand the protuberance 23 will be urged upwardly so that it will engage the keeper 2| and will prevent the end 22 of strip II from slipping out of said keeper.

Having described my invention, what I claim and desire to secure by Letters Patent is:

, A wrist watch strap comprising a pair of overlapping, elongated strips of thin, resilient material, a respective eye in one end of each strip for attachment of said strips to a wrist watch, an eye at the other end of one of said strips, a rectangular buckle `having an end bar pivotally secured in said last-mentioned eye, a pair of parallel side bars extending. from said end bar and having inwardly-turned end portions provided with respective locking prongs, and an intermediate bar secured at its ends to said side bars and substantially parallel to said end bar, said locking prongs being turned downwardly and spaced apart crosswise of said buckle, said other strip having its end portion opposite the eye therein receivable between said inwardly-turned end portions of said side bars and said intermediate bar and provided with paired vperforations spaced apart longitudinally thereof to receive said locking prongs, and. a loop-shaped keeper slidable on said one strip and receiving said other strip to hold said other strip down on said intermediate bar and thereby maintain said prongs in a selected pair of said apertures, said other strip having a tapered end insertable through said loop and a protrusicn thereon holding said keeper in operative engagement therewith.

JOHN C. WHITE.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS 

